Refrigerating apparatus



June 1, 1943 H. B. HULL 2,320,436

' REFRIGERATING APPARATUS n Original Filed Dec. 31, 1938 2 Sheets-Sheet l June'l, 1943. H. B. HULL 2,320,436

REFR IGERAT ING APPARATUS ofiginal Filed Dec. 51. 1958 2 Sheets-Sheet 2 Patented June 1, 1943 REFRIGERATIN G APPARATUS Harry Hull, Dayton, Ohio,y assignor to General Motors Corporation,.Dayton, Ohio, a corporation oi' Delaware original application December 31, 193s, serial No. 248,679. Divided and this application May 28, 1941, serie1N0.395,64s

(c1. 'sz-129) 7 Claims.

*This application is a division of my copending application Ser. No. 248,679 now Patent No. 2,268,451granted Dec. 30, 1941. The patent, in turn, is a continuation-impart of my copendlng application Ser. No. 749,773, filed Oct. 24, 1934.

` The matter shown and claimed in'this case is also y shown in the two earlier filed cases.

It is recognized that applicant is not the iirst to provide a portable room cooler of the type in which an evaporator is mounted within the space vto be conditioned and an air cooled condenser is mounted outside 'the space to be 'conditioned. Others have provided self-contained cabinets adapted to be placed directly in the window opening and supported on the window ledge with one portionof the cabinet projecting into the room-v and 'housing the evaporator and another portion of the cabinet projecting outside theroom and housing the condenser. Units of the type in which the main cabinet is mounted directlyv in the window opening have numerous disadvantages, however, which have been overcome by my arrangementas disclosed herein.

One of the disadvantages of a unit of the type in which a single cabinet is provided'for housing both the evaporator and the refrigerant liquefying unit is that the noises produced by the refrigerant liquefying apparatus are readily transmitted into the conditions space through the walls of the cabniet.

Another disadvantage of the prior art units is that the cabinets take up too much valuable window space whereas with my improved arrangement, the window may be substantially closed while the apparatus vis in place.

Another disadvantage of the prior art arrangements is that the minimum practical width of a cabinet is greater than the width of many modern window openings. By using brackets for mounting the unit as disclosed herein the cabinet may be made wider than the window if necessary. One object of my invention, therefore, is to provide a self-contained room cooler ofthe window sill type which requires only a small window opening' and does not materially interierewlth the closing of the window.

Further objects and vadvantages of the present invention will be apparent from the following description, reference being had to the accompanying drawings, wherein a preferred form of the present invention is clearly shown.

In the drawings: Fig. 1 is a vertical cross-sectional view, somewhat diagrammatic', of a room cooler embodying features of my invention;

Fig. 2 is a vertical cross-sectional view taken along the lines 2--2 of Fig, 1;

Fig. 3 is a view in perspective of a portion o Fig. l;

Fig. 4 is a circuit diagram for the electrical controls;

Fig. 5 is a horizontal cross-,sectional View, with 'portions of the window removed of the apparatus shown in Fig. 1; and

Fig. 6 is a cross-sectional view of a detail. y

An apparatus embodying features of my invention includes in general an air cooling or conditioning device adapted to be placed in a room or the like, with a'. 'heat absorber in the room and with a heat dissipator having at least a portion thereof extending through a window of lthe room, the entire structure being preferably joined to forma unitary device when it is assembled or installed in the room.

' As shown in Figs. 1 to 6 inclusive, the compressor |66, together with its motor |61, may be placed outside of the window |95. In this unit a U'shaped bracket means or structure is formed by the arms |50 and |5| adjustably secured together at |52 to compensate for any wall width. This U-shaped structure is hung over the sill |53, and a false sill structure |54 is arranged therewithto engage with the sash. Thus the false sill is provided with lateral adjusting strips so that the false sill may be adjusted to any width of Window desired. This lateral adjustment is secured by means of the bolts |56.

'I'he air cooling casing |51 is secured to the arms |50 and hangs in the room |58 while the heat dissipating casing |59 is secured to the arms |5| through the medium ofthe hinged brackets |60. An evaporator |6| is placed in the casing |51 together with a motor |62 which drives the fan |63. The fan |63 causes air to iiow from the room |58 through the opening |64 over the evaporator I6 and be discharged back into room through the opening |65. The refrigerant is caused to circulate through the system by means of a compressor |66 which is driven by a motor |61 both located within the casing |59. Refrigerant in the evaporator |6| flows through the pipe |68 to the compressor |66 from whence it is discharged in compressed condition through the pipe |69 to. the condenser |10. The refrigerant there condensed is gathered in the receiver |1| and ows therefrom through the pipe |12 to the sor, a fa-n for circulating air over said evaporator,

' condenser supporting means supported by thef expansion valvel |13 which is provided with a of my copending application Serial No. 749,773,A

of which this application is a division. The motor |61 also drives a fan |15 which causes air to ow from the .inlet |16 over the condenser |10 and lbe discharged lthrough the' outlet |11. addition, if desired, a small air inlet may also be provided at |18 along one side of the casing |59. All of the connections between the casings |51 and |59, may pass through the false sill |54 as will be readily understood.

-The moisture` condensed on the evaporator |6| gathers at the lower portion of the casing |51 and enters the pump |80 through the pipe IBI. They pump |80 may be driven by the motor |62 and discharges the condensate through thepipe |82 to the spray-head |83 placed over the condenser |10. VAs heretofore described with respect to Fig.

, 6, of said copending application Serial No. 749,773,

this condensate then evaporates as it flows over the condenser |60 and is discharged to the atmosphere outside of the room.

The motor |62 may be controlled by a handswltch |90 so that the fan '|63 may be operated withoutl refrigeration, if desired. When refrigeration is desired the hand switch |9| is also closed after which the thermostat |92 similar to thermostat 41, of the above mentioned application causes the motor |61 to operate in accordance with conditions in the room |58.

The false sill structure may be of any character desired. Conveniently, the central section |54 may rest on Ya central rubber section |93. The extensions |55 may rest on extensoin rubber sections-|94. The sections |54 and |55 are laterally adjustable as heretofore described for any size window and they are of .such a width that a sash |95 rests on both the sections |54 and |55 and thus makes a substantially air-tight joint at the lower portion. The sash may be shortened by cutting `off the lower portion, or, if necessary. a new sash of proper length may be substituted. The sill structure herein shown is merely ex'emplary and it is to be understood that any sill structure maybe used, as for example, a sill of the exact dimensions to fit the window.

While the form of embodiment of the invention as herein disclosed, constitutes a preferred form, it is to'be understood that other forms might be sdopted, all coming within the scope of the claims which follow. 1

What is claimed is as follows:

1. Apparatus'for conditioning air for a room or the like comprising in combination, a cabinet disposed within said room, an evaporator within said cabinet, a motor-compressor unit, a condenser located outside of said room, refrigerant flow connections between said condenser, evaporator and compressor, and common means for supporting said condenser and said cabinet, said last named means including means for adjusting the position'of said condenser relative to said cabinet.

2. A window mounted air conditioning apparatus foi-'conditioning air for a' room having a window opening comprising in combination, a cabinet disposed within said room adjacent lsaid window, an evaporator withinsaid cabinet, a condenser, a compressor, fluid flow connections between said evaporator, condenser and compreswindow opening and secured to said having a portion projectingthrough said window, said means comprising a hinged connection whereby said condenser may be swung relative to the window opening from a position in front of the window to a position away from the window, and means for' circulating air over said condenser, and means for mounting "said compressor on said condenser supporting means.

3. A window mounted air conditioning apparatus. for conditioning air for a room having a window comprising in combination, a cabinet disposed within said room adjacent said window, an evaporator within said cabinet, a condenser, a compressor, fluid flow connections between said evaporator, condenser andcompressor, a fan for circulating air over Laid evaporator, condenser supporting m'eans secured to said cabinet and having a portion` projecting through Isaid window, said means comprising a hinged connection whereby said condenser may be swung relative to the window opening from a position in front of the window to a position away from the window, and means for circulating air over said condenser.

' 4. A room cooling structure comprising a room cooling section including a casing and an evaporator therein, a refrigeranty liquefying section including a casing anda condenser therein, relatively shallow bracket means connecting s'aid casings, said structure being so constructed and arranged as to form a recess for receiving a portion of the wall below the sill structure of a window, refrigerant flow .means between said evaporator and said condenser, the elements of said structure being so o onst'ructed and arranged that when mounted on a window sill, the uppermost portion of one of saidsections does not extend to a higher level than any'portion of the bracket means, said refrigerant flow means being so disposed with respect to said bracket means so as to be protected thereby from impact by the sash of the window as the latter moves substantially into its normally closed position.

5. In combination with a room wall having a window therein, a room air conditioning unit comprising relatively shallow supporting bracket means passing through said window, a self-contained room cooling section including a casing and an evaporator therein supported by said bracket means adjacent the inside wall below said window, a self-contained heat dissipating section including a casing anda condenser therein supported by said bracket means adjacent the outside wall below the window, and heat transfer means between said evaporator and said condenser, said sections beingso arranged with respect to said bracket means so asnot to diminish to any material extent the passage of light through the window opening.

6. A room cooling structurel comprising a room cooling section including an evaporator, a refrigerant liquefying section including a condenser. bracket means connecting said sections, said sections and said bracket means being so constructed and arranged as to form a recess for receiving a portion of the wall below the sill structure of a window, refrigerant flow means between said evaporator and said condenser, said room cooling section including a housing secured lto said bracket means and having an air inlet and an air outlet, and said heat dissipating section including a. separate housing secured to said bracket `cabinetI and" lov within the room, a heat dissipating section including a casing and a condenser' therein carried by said bracket means .outside said room, and heat transfer means between said heat absorbing section and said heat dissipating section, said bracket means and the elements carried thereby being so constructed and-arranged so as to straddle the wail adjacent said window Without materially intercepting the passing of light through the window opening.

' HARRY B. HULL. 

